/* ─── Font faces ─── */
@font-face { font-family: 'Cormorant Garamond'; font-style: normal; font-weight: 300; font-display: swap; src: url('../fonts/cormorant_garamond_300_normal_latin.woff2') format('woff2'); }
@font-face { font-family: 'Cormorant Garamond'; font-style: italic; font-weight: 300; font-display: swap; src: url('../fonts/cormorant_garamond_300_italic_latin.woff2') format('woff2'); }
@font-face { font-family: 'IBM Plex Mono'; font-style: normal; font-weight: 400; font-display: swap; src: url('../fonts/ibm_plex_mono_400_normal_latin.woff2') format('woff2'); }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 300; font-display: swap; src: url('../fonts/inter_300_normal_latin.woff2') format('woff2'); }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 400; font-display: swap; src: url('../fonts/inter_400_normal_latin.woff2') format('woff2'); }

/* ─── Reset ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ─── Variables ─── */
:root {
  --black:   #1a1a1c;
  --surface: #202023;
  --border:  #2e2e32;
  --border2: #3a3a3e;
  --text:    #c0c0b8;
  --text2:   #a0a098;
  --muted:   #686860;
  --accent:  #b8966a;
  --accent2: #d0a878;
  --white:   #eeeee8;
  --font:    'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --mono:    'IBM Plex Mono', 'Courier New', monospace;
  --serif:   'Cormorant Garamond', Georgia, serif;
}

/* ─── Base ─── */
html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--text);
  font-family: var(--font);
  font-weight: 300;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: radial-gradient(circle, #1d1d22 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
}

/* ─── Skip link (accessibility) ─── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 99999;
  background: var(--accent);
  color: var(--black);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 500;
  padding: 0.6rem 1.2rem;
  text-decoration: none;
  transition: top 0.2s;
}

.skip-link:focus { top: 0.5rem; }

/* ─── Focus styles ─── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 1px;
}

/* ─── Nav ─── */
.page-nav {
  position: sticky;
  top: 0;
  background: rgba(7,7,8,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 clamp(1rem, 4vw, 3rem);
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 100;
}

.page-nav-logo {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.22em;
  color: var(--muted);
  text-decoration: none;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.page-nav-logo strong { color: var(--accent); font-weight: 500; }

.page-nav-back {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.12em;
  color: var(--accent);
  text-decoration: none;
  text-transform: uppercase;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.page-nav-back:hover { border-color: var(--accent); }

/* ─── Article ─── */
article {
  max-width: 680px;
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 5rem) clamp(1rem, 4vw, 2rem) 6rem;
  position: relative;
  z-index: 1;
}

/* ─── Post header ─── */
.post-label {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.post-label::after {
  content: '';
  width: 1.5rem;
  height: 1px;
  background: var(--accent);
  opacity: 0.4;
}

.post-meta {
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 2rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

.post-meta span { color: var(--border2); }

h1 {
  font-family: var(--serif);
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 300;
  color: var(--white);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: 1.5rem;
}

.post-deck {
  font-size: 1.08rem;
  color: var(--text2);
  line-height: 1.7;
  margin-bottom: 3rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}

/* ─── Body copy ─── */
h2 {
  font-family: var(--serif);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 300;
  color: var(--white);
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 3rem 0 1rem;
}

h3 {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 2.5rem 0 0.8rem;
}

p { margin-bottom: 1.4rem; font-size: 0.97rem; }
p:last-child { margin-bottom: 0; }
strong { color: var(--white); font-weight: 500; }
em { font-style: italic; color: var(--text2); }

/* ─── Terminal block ─── */
.terminal {
  background: #0d0d0f;
  border: 1px solid var(--border);
  padding: 1.4rem 1.6rem;
  margin: 2rem 0;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.9;
  color: var(--text2);
  overflow-x: auto;
}

.terminal .prompt { color: var(--accent); user-select: none; }
.terminal .result { color: var(--muted); }
.terminal .hit    { color: #6aab6a; }
.terminal .warn   { color: #c49a3a; }

/* ─── Callout ─── */
.callout {
  border: 1px solid var(--border2);
  background: var(--surface);
  padding: 1.6rem 2rem;
  margin: 2rem 0;
  position: relative;
}

.callout::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(to bottom, var(--accent), transparent);
}

.callout p { font-size: 0.9rem; margin-bottom: 0; }

/* ─── Ordered list ─── */
ol.steps {
  list-style: none;
  counter-reset: step-counter;
  margin: 1.5rem 0;
}

ol.steps li {
  counter-increment: step-counter;
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.93rem;
}

ol.steps li:first-child { border-top: 1px solid var(--border); }

ol.steps li::before {
  content: counter(step-counter, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--accent);
  padding-top: 0.18rem;
  letter-spacing: 0.04em;
}

/* ─── CTA block ─── */
.post-cta {
  border: 1px solid var(--border2);
  padding: 2rem 2.2rem;
  margin: 3rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.post-cta-label {
  font-family: var(--mono);
  font-size: 0.56rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--accent);
}

.post-cta h3 {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 300;
  color: var(--white);
  letter-spacing: -0.01em;
  text-transform: none;
  margin: 0;
}

.post-cta p { font-size: 0.88rem; color: var(--text2); margin-bottom: 0; }

/* ─── Button ─── */
.btn {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  background: var(--accent);
  color: var(--black);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 500;
  padding: 0.85rem 1.8rem;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}

.btn:hover { background: var(--accent2); }

/* ─── Back link ─── */
.post-back {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.post-back a {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.post-back a:hover { color: var(--accent); }

/* ─── Footer ─── */
footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 2rem clamp(1rem, 4vw, 2rem);
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-copy {
  font-family: var(--mono);
  font-size: 0.56rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.footer-link {
  font-family: var(--mono);
  font-size: 0.56rem;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-decoration: none;
  text-transform: uppercase;
  transition: color 0.2s;
}

.footer-link:hover { color: var(--accent); }

/* ─── Mobile ─── */
@media (max-width: 640px) {
  .post-cta { padding: 1.5rem 1.4rem; }
  .callout   { padding: 1.3rem 1.4rem; }
}

/* ─── Related briefings ─── */
.related-briefings {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}

.related-title {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.related-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.related-link {
  display: block;
  padding: 1.25rem;
  border: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s;
}

.related-link:hover {
  border-color: var(--accent);
}

.related-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.related-heading {
  display: block;
  font-size: 0.9rem;
  color: var(--text);
  line-height: 1.4;
}

@media (max-width: 600px) {
  .related-grid { grid-template-columns: 1fr; }
}